If you want to sell a subscription product and want the users to be charged automatically every recurring cycle, and also have dap extend user's access to product every recurring cycle automatically, then here are your options:

DAP Generated Button For Paypal Standard

1. Create a Product in DAP.

2. Go to 'Price & Recurring' tab in DAP products page, and set the product as a 'recurring' product. Fill in the price, total recurring count, recurring cycle details. It will be used by dap to setup the recurring profile in Paypal.

3. Generate 'subscription' payment button in dap (dap payment processing -> generate payment button page).

Integrate the payment button with paypal using dap documentation.

The recurring profile is setup in paypal at the time of initial purchase itself. After that Paypal will automatically charge the user every recurring cycle and let dap know via IPN (instant payment notification) and dap will automatically extend user's access to product upon each payment.

Paypal Hosted Button

1. Create a Product in DAP.

2. Generate a Paypal Hosted button and setup the 'price&recurring' options within the paypal button. Integrate the paypal button with dap using dap documentation.